<template>
    <div>
        <!-- <Chart :config="demoConfig"/> -->
        <div class="layoutJSON">
            Displayed as <code>[x, y, w, h]</code>:
            <div class="columns">
                <div class="layoutItem" v-for="item in layout" :key="item.i">
                    <b>{{ item.i }}</b
                    >: [{{ item.x }}, {{ item.y }}, {{ item.w }}, {{ item.h }}]
                </div>
            </div>
        </div>
        <button @click="addItem">Add an item dynamically</button>
        <input type="checkbox" v-model="draggable" /> Draggable
        <input type="checkbox" v-model="resizable" /> Resizable
        <grid-layout
            :layout.sync="layout"
            :col-num="colNum"
            :row-height="30"
            :is-draggable="draggable"
            :is-resizable="resizable"
            :vertical-compact="true"
            :use-css-transforms="true"
        >
            <grid-item
                v-for="item in layout"
                :key="item.i"
                :static="item.static"
                :x="item.x"
                :y="item.y"
                :w="item.w"
                :h="item.h"
                :i="item.i"
            >
                <span class="text">{{ item.i }}</span>
                <span class="remove" @click="removeItem(item.i)">x</span>
            </grid-item>
        </grid-layout>
    </div>
</template>

<script>
import { GridLayout, GridItem } from 'vue-grid-layout';
export default {
    components: {
        GridLayout,
        GridItem,
    },
    data() {
        return {
            layout: [
                { x: 0, y: 0, w: 2, h: 2, i: '0' },
                { x: 2, y: 0, w: 2, h: 2, i: '1' },
                { x: 4, y: 0, w: 2, h: 2, i: '2' },
                { x: 6, y: 0, w: 2, h: 2, i: '3' },
                { x: 8, y: 0, w: 2, h: 2, i: '4' },
            ],
            draggable: true,
            resizable: true,
            colNum: 12,
            index: 0,
            demoConfig: {
                database: '',
                name: 'demo1',
                demoOption:{
                    option: {
                        "tooltip":{"trigger":"axis","axisPointer":{"type":"shadow"}},
                        "legend":{data:["样例1","样例2","样例3"],type: 'scroll'},
                        "grid":{"left":"0%","right":"0%","bottom":"0%","containLabel":true},
                        "xAxis":[{"type":"category","data":["2021/4/20","2021/4/21","2021/4/22","2021/4/23"]}],
                        "yAxis":[{"type":"value"}],
                        "series":[{"name":"样例1","type":"bar","stack":"","emphasis":{"focus":"series"},
                            "data":[2588,4215,7829,1653]},
                        {"name":"样例2","type":"bar","stack":"","emphasis":{"focus":"series"},
                            "data":[8514,5203,4620,6686]},
                        {"name":"样例3","type":"bar","stack":"","emphasis":{"focus":"series"},"data":[2987,2066,3927,8402]}]}
                },
            }
        };
    },
    mounted() {
        // this.$gridlayout.load();
        this.index = this.layout.length;
        // console.log(JSON.stringify(this.demoConfig, null, 4));
        this.mekeWebSocket();
    },
    methods: {
        addItem: function () {
            // Add a new item. It must have a unique key!
            this.layout.push({
                x: (this.layout.length * 2) % (this.colNum || 12),
                y: this.layout.length + (this.colNum || 12), // puts it at the bottom
                w: 2,
                h: 2,
                i: this.index,
            });
            // Increment the counter to ensure key is always unique.
            this.index++;
        },
        removeItem: function (val) {
            const index = this.layout.map(item => item.i).indexOf(val);
            this.layout.splice(index, 1);
        },

        mekeWebSocket() {
            // let ws  = new WebSocket('ws://10.12.210.60:8080/sockjs-node/756/1op1da1g/websocket');
            let ws  = new WebSocket('ws://JDDBJ1PF1KW3GK:8088/');
            
            ws.onopen = () => {
                // Web Socket 已连接上，使用 send() 方法发送数据
                console.log("数据发送中...");
                ws.send("发送数据");
            };
            ws.onmessage=(msg)=>{
                this.buildMsg(msg.data);
                // console.log('webSocket-onmessage');
            };
            ws.onerror=()=>{
                console.log('webSocket-onerror');
            };
            ws.onclose=()=>{
                console.log('webSocket-onclose');
            };
        },
        buildMsg(res) {
            const resType = typeof res;
            let data = null;
            if (resType === 'string') {
                const str = res.substring(1);
                data = str;
            }
            console.log('data', data, typeof data);
            // console.log(`数据类型：${resType}，data：${data}， data类型：${typeof data},${data instanceof Array}`);
        },
    },
};
</script>

<style>
.layoutJSON {
    background: #ddd;
    border: 1px solid black;
    margin-top: 10px;
    padding: 10px;
}
.columns {
    -moz-columns: 120px;
    -webkit-columns: 120px;
    columns: 120px;
}
/*************************************/
.remove {
    position: absolute;
    right: 2px;
    top: 0;
    cursor: pointer;
}
.vue-grid-layout {
    background: #eee;
}
.vue-grid-item:not(.vue-grid-placeholder) {
    background: #ccc;
    border: 1px solid black;
}
.vue-grid-item .resizing {
    opacity: 0.9;
}
.vue-grid-item .static {
    background: #cce;
}
.vue-grid-item .text {
    font-size: 24px;
    text-align: center;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    height: 100%;
    width: 100%;
}
.vue-grid-item .no-drag {
    height: 100%;
    width: 100%;
}
.vue-grid-item .minMax {
    font-size: 12px;
}
.vue-grid-item .add {
    cursor: pointer;
}
.vue-draggable-handle {
    position: absolute;
    width: 20px;
    height: 20px;
    top: 0;
    left: 0;
    background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10'><circle cx='5' cy='5' r='5' fill='#999999'/></svg>")
        no-repeat;
    background-position: bottom right;
    padding: 0 8px 8px 0;
    background-repeat: no-repeat;
    background-origin: content-box;
    box-sizing: border-box;
    cursor: pointer;
}
</style>
